Interlocking sewer-tile.



INTERLOCKING SEWEH TILE. APPLICATION mm AUG-2B" Patented Apr. 80,1918.

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ERNEST ARGO, OF ST. LOUIS, MISSOURI, ASSIGNOB. TO LA CLEDE-fiI-IHISTY CLAY PRODUCTS 00., OF ST. LOUIS, MISSOURI, A CQRPQRATION L? MISSGURI.

INTERLOCKING SEWER EILE.

Specification of Letters Patent,

Patented Apr. SEQ, ri id.

Application filed August 2%, 1916. Serial No. 117,5299.

To all-whom it may concern Be it'knownthat I, Enxnsr ARGO, a citi-i Tiles, of whichthe following is a specification.

-This invention relates to interlocking sewer tile and has for its object to provide sewertile ofa nature which will'reduce the cost of sewer construction while increasing the strength and easeof assembly. This and other objects will be more fully set forth andj'shown inthe following specifica tion and accompanying drawing;

In which'' Figure 1 is a vertical transverse section through a segment of the sewer constructed of mytile 3 Fig. 2 is a perspective Fig. 3 is a and n i Fig. 1 is a view similar to Fig. 1 of a modified form.

Like numerals refer to like elements throughout the drawing, in which 10 design'ates generally an exterior or locking tile, and 11 designates an interior or lining tile. The latter'is provided with the upstanding lugs or block portions 11 preferably having their sides radially convergingas shown in Fig. 1, for example, theselugs being cored or apertured as indicated by 11? for'lightness.

The exterior tiles 10 are provided with channels or grooves 10*, the sides thereof also converging radially, and spaced apart at the inner surface of the tile a distance sutficient to permit insertion therethrough of the lugs or ribs 11 of the lining tile 11. The exterior blocks 10 are also cored or apertured at 10 -to obtain lightness without sacrificing strength thereof. The blocks 10 are shown as provided'with two grooves each, the same being formed by the side lugs 10 and central lug 10 The lining tiles 11 are also provided with two or more of the lugs 11 \Vhen the two sets of tile are assembled to Form the sewer they are preferably interlocked as shown in Fig. 1, wherein the l ning tile 11 bridges the gap of one of the tile; perspective of a lining tile;

between adjacent exterior or locking tiles 10, one of the lugs 11 being contained in a groove 10 of one of the locking tile and the other lug 1]. being contained in the groove 10 of the adjacent locking tile 10. -T he lining tiles 11 have their sides pro- ]ect1ng outwardly of the lugs 11 as indicated by numeral 11, and these side project'- ing portions lie adjacent corresponding portions of the adjacent lining tiles when in assembled relation, so that when the sewer has been formed on the necessary molds or forms, the latter may be removed without the sewer collapsing owing to the contact of the sides of the lining tiles 11 and their interlocked engagement with the locking tiles-10. In this way the weight of the sewer is distributed about its internal periphery. In constructing the sewer, however to prevent leakage and to eliminate cracks, I lay the tile, both courses. in cement, thereby assuring against their displacement and presenting a smooth interior surface. the surface of the lining tile being preferably glazed or otherwise smoothed.

Tapering or divergence of the lugs and the grooves, while not preventing their being easily superimposed in assembling the sewer course. will present a wedging action wien the cement surrounding the lugs has set, making a true interlocking construction and eliminating any danger of the collapse or falling apart of the sewer members. At the same time, the tile members may be readily assembled and laid. since it is only necessary in constructing the lower course of the sewer to lay mortar in the grooves an d drop the inner ring members into such grooves pressing them firmly home, which will result in the proper distribution and spreading of the cement or other/binder. in laying the upper half of the course cement may be easily spread along the top of the lugs and the outer ring members dropped thereover and pressed firmly home which will also result in the proper spreading and distribution of the cement, the laying of both'upper and lower portions being easy I and taking comparativelylittle time,- a feature of "much merit in my construction.

A tile constructed according to my invention will not only function as a lining as in present day sewer construction, but also pre sent a course which is of length substantially equal to that of the locking tile While not presenting the weight thereof.

The locking tile, as is obvious, will lock the lining tile against displacement in addition to serving as an added strengthening course.

In addition to the above advantages, my improved lining tile presents an ineres. :d bearing surface on the locking ti e, since the lugs 11* not only act as locking or engaging members but they present increased contact or'bearing surface to the. complementary exterior tile 10.

In Fig. l I have shown a slight modification wherein the inner tiles 11 have their projecting sides 11 enlarged thereby presenting an increased contact surface at the sides where the same is necessary and advisable. In this modified construction the central lugs 10 of the locking tile 10 are grooved or indented as indicated by numerals 10' to provide for the enlarged sides of the locking tile 11.

It will be obvious that my invention is susceptible to many modifications and improvements, and I do not wish to be restricted to the form shown and described except as defined in the appended claim,

Vihat I claim is: I

A sewer course or the like comprising a1 inner ring; and an outer ring of block INC-lib hers, said inner ring members being con structed with lugs outwardly projeci'imj; from their outer surface the sides of said lugs diverging outwardly from said ring members, said outer ring members being pr vided with grooves converging inwardly oi the bottom thereof, said lugs and grooves being so constructed and arranged that the blocks of one ring may be readily dropped on the blocks of the other ring, said lugs and grooves interiitting in such wise as to provide cement spaces in said grooves surrounding said lugs whereby when cement or the like is set in such spaces a wedging action will be exerted between said lugs and grooves to lock said inner and outer blocks in assembled relation.

In testimony whereof, I have subscribed my name.

ERNEST ARGO.

Witness T1105. GILL. 

